EM Cygni: A study of its eclipse timings

EM Cygni is a Z Cam‐subtype eclipsing dwarf nova. Its orbital period variations were reported in the past but the results were in conflict to each other while other studies allowed the possibility of no period variation. In this study we report accurate new times of minima of this eclipsing binary a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Astronomische Nachrichten 2008-01, Vol.329 (1), p.39-43
Hauptverfasser:	Csizmadia, Sz, Nagy, Zs, Borkovits, T., Hegedüs, T., Bíró, I.B., Kiss, Z.T.
Format:	Artikel
Sprache:	eng
Schlagworte:	stars: dwarf novae stars: individual: (EM Cyg)
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	EM Cygni is a Z Cam‐subtype eclipsing dwarf nova. Its orbital period variations were reported in the past but the results were in conflict to each other while other studies allowed the possibility of no period variation. In this study we report accurate new times of minima of this eclipsing binary and update itsO –C diagram.We also estimate the mass transfer rate in EM Cygni system and conclude that the mass transfer is far from the critical value. The mass transfer rate determined from the eclipse timings is in agreement with the spectroscopically determined value. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	0004-6337 1521-3994
DOI:	10.1002/asna.200610832